Abstract
Two new species of the genus Psammocinia (Dictyoceratida, Irciniidae), P. lobatus and P. rubra, are described from Gageodo Island (Sohuksando Island) and Jejudo Island, Korea. Psammocinia lobatus is most closely related to P. wandoensis Sim and Lee in growth form. However, it can be distinguished by its sharp conules and primary and secondary fibres, lightly cored with detritus. Psammocinia rubra is readily distinguished from the other described Psammocinia species by the blunt conules, reddish brown color of specimen, brown color of fibres and filaments, secondary web between adjacent primary fibres and filament coated with brown granules.
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